The present essay is the revised version of a talk given at the meeting of the German Sociological Association (DGS) on 'Social Theory and Social Practice', which was held on 16-18 February 1989 in the Centre for Interdisciplinary Studies at the University of Bielefeld. The original German version of that talk was published in Jenseits der Utopie : Theoriekritik der Gegenwart / ed. by Stefan Müller-Doohm. - Frankfurt : Suhrkamp, 1991, S. 15-47: "Soziologie und Zeitdiagnose: oder: Die Moderne im Selbstbezug" s.a. http://publikationen.ub.uni-frankfurt.de/volltexte/2007/3906/